Butterfly Valve Bolt Plugs

These little blue thingies go in the top and bottom of your TCW butterfly valve to prevent liquid from pooling in the bolt hole, or from other stuff from accumulating in it.

The smaller one goes at the top, and covers the bolt that holds the handle on. The larger goes at the bottom.

Will these work on valves from other manufacturers? Maybe! The top plug should fit into a hole about 9 mm in diameter. The bottom plug should fit into a hole about 14.5 mm in diameter.